题目内容：
回答第55空。
A．A must B．B did
C．C has to
D．D does
参考答案：
答案解析：
单选题：回答第55空。
- 题目分类：理工类
- 题目类型：单选题
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B．B did
C．C has to
D．D does
B．B did
C．C has to
D．D does
A. purposesB. thoughtsC. endsD. goals
A. purposesB. thoughtsC. endsD. goals
A. whom B. whoC. which D. that
A. whom B. whoC. which D. that
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家丑问题的存在是个客观事实，并非不亮出来就不存在。问题的关键不在该不该亮，而是有了家丑到底想不想真正解决。不亮，问题不仅存在，而且还有恶化成不治之症的可能。亮了
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请在（63）处填上最佳答案。
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